Fukushima Spent Fuel Pool sprayings: (data collated from Tepco press releases) SFP4: Concrete pump 15 May 2011 16:25-19:38 Concrete pump 14 May 2011 16:04-19:04 Concrete pump 11 May 2011 16:07-20:25 Concrete pump 9 May 2011 16:05-19:05 Concrete pump 7 May 2011 14:05-17:30 Concrete pump 6 May 2011 12:38-17:51 Concrete pump 5 May 2011 12:19-20:46 Concrete pump 27 April 2011 12:18-15:15 Concrete pump 26 April 2011 16:50-20:35 Concrete pump 25 April 2011 18:15-26 April 2011 00:26 Concrete pump 24 April 2011 12:25-17:07 Concrete pump 23 April 2011 12:30-16:44 Concrete pump 22 April 2011 17:52-23:53 Concrete pump 21 April 2011 17:14-21:20 Concrete pump 20 April 2011 17:08-20:31 Concrete pump 19 April 2011 10:17-11:35 Concrete pump 17 April 2011 17:39-21:22 Concrete pump 15 April 2011 14:30-18:29 Concrete pump 13 April 2011 00:30-06:57 Concrete pump 9 April 2011 17:07-19:24 Concrete pump 7 April 2011 18:23-19:40 Concrete pump 5 April 2011 17:35-18:22 Concrete pump 3 April 2011 17:14-22:16 Concrete pump 1 April 2011 08:28-14:14 As of 7 am April 1, 1278 tons of water has been injected to the pool Concrete pump 30 March 2011 14:04-18:33 Concrete pump 27 March 2011 16:55-19:25 Concrete pump 25 March 2011 19:05-22:07 Injection of seawater through FPCFS 25 March 2011 06:05-10:20 Concrete pump 24 March 2011 14:35-17:30 Concrete pump 23 March 2011 10:00-13:00 Concrete pump 22 March 2011 17:20-20:30 Water spray by the Self Defence Force 21 March 2011 06:37-08:41 Water spray by the Self Defence Force 20 March 2011 18:45-19:45 Water spray by the Self Defence Force 20 March 2011 08:21-09:40 Explosion at unit 4 15 March 2011 06:00 appr. Temperature in pool is 84 C 14 March 2011 04:08 SFP3: Freshwater injection using FPCFS 16 May 2011 15:00- Freshwater injection using FPCFS 9 May 2011 14:14-15:00 Freshwater injection using FPCFS 8 May 2011 12:10-14:10 Freshwater injection using FPCFS 26 April 2011 12:25-14:02 Concrete pump, to test level 26 April 2011 ? 2 minutes Concrete pump 22 April 2011 14:00-15:40 Trial injection using FPCFS 22 April 2011 13:40-14:00 Concrete pump 18 April 2011 14:17-15:02 Concrete pump 14 April 2011 15:56-16:32 Concrete pump 12 April 2011 16:26-17:16 Concrete pump 10 April 2011 17:15-19:15 Concrete pump 8 April 2011 17:06-20:00 Concrete pump 7 April 2011 06:53-8:53 Concrete pump 4 April 2011 17:03-19:19 Concrete pump 2 April 2011 09:52-12:54 As of 7am April 1, 4802 tons of water has been injected to the pool Concrete pump 31 March 2011 16:30-19:33 Switching to freshwater, concrete pump 29 March 2011 14:17-18:18 Concrete pump 27 March 2011 12:34-14:36 Water spray, TFD Hyper Rescue 25 March 2011 13:28-16:00 Seawater injection using FPCFS 24 March 2011 05:35-16:05 Seawater injection 23 March 2011 11:00-13:20 Water spray,TFD Hyper Rescue/Osaka FD 22 March 2011 15:10-16:00 Water spray,TFD Hyper Rescue 20 March 2011 21:36 to 21 March 2011 03:58 Water spray,TFD Hyper Rescue 19 March 2011 14:10 - 20 March 2011 03:40 Water spray,TFD Hyper Rescue 19 March 2011 00:30 to 01:10 Water spray, US milit.fire engine 18 March 2011 14:45 Water spray, high pressure water cannon 18 March 2011 14:00 to 14:38 Water spray, high pressure water cannon 17 March 2011 19:05 to 20:07 Water discharge helicopters of the JSDF 17 March 2011 09:48 to 10:01 Explosion at unit 3 14 March 2011 11:01 SFP2: Motor driven pump 14 May 2011 13:00-14:37 Motor driven pump 9 May 2011 13:09-14:45 Motor driven pump 6 May 2011 9:36-11:16 Motor driven pump 2 May 2011 10:05-11:40 Motor driven pump 28 April 2011 10:15-11:28 Motor driven pump 25 April 2011 10:12-11:18 Motor driven pump 22 April 2011 15:55-17:40 Motor driven pump 19 April 2011 16:08-17:28 Motor driven pump 16 April 2011 10:13-11:54 Motor driven pump 13 April 2011 13:15-14:55 Motor driven pump 10 April 2011 10:37-12:38 Motor driven pump 7 April 2011 13:29-14:34 Motor driven pump 4 April 2011 11:05-13:37 Motor driven pump 1 April 2011 14:56-17:05 As of April 1,tons of water has been injected to the pool Motor driven pump 30 March 2011 19:05-23:50 Motor driven/fire fighting pump 30 March 2011 09:25-13:10 Switching to freshwater,using FPCFS 29 March 2011 16:30-18:25 Sea water injection, through FPCFS 25 March 2011 10:30-12:19 Injection of 18 t seawater 22 March 2011 16:00-17:00 Injection of 40 t seawater via FPCFS 20 March 2011 15:05-17:20 SFP1: As of 7am April 1, 90 tons of water has been injected to the pool Concrete pump, to confirm position 31 March 2011 17:16-17:19 Concrete pump 31 March 2011 13:03-16:04